Improvement in lubricators



UNITED STATES PATENT GFFICE.

IMPROVEMENT IN LUBRICATORS.

Specification forming part of Letters Patent No. 119,751, dated Octoberl0, 1871.

To all whom t may concern:

Be it known that I, ERICK EHLIN, of San Francisco, in the county of SanFrancisco and State of California, have invented a new and usefulImprovement in Lubricator; and I do hereby declare that the following isa full, clear, and exact description thereof, which will enable othersskilled in the art to make and use the same, reference being had to theaccompanying drawing forming part of this specification.

My invention relates to lubricators, and the principle thereof consistsin causing the oil to trickle over the surface of a conical valve, andthen around a spiral coil attached to a prolongation thereof, for thepurpose of graduating and economizing the oil.

The accompanying drawing represents a sectional elevation of the deviceas applied to the journal of a shaft, a cross-section of the latter(with the journal-box) being shown in outline in the drawing.

Similar letters of reference indicate corresponding parts.

Ais the oil-reservoir. B is a tube, which passes through the stopper,and is placed in a hole in the cap of the journal-box, as seen in thedrawing. C is the stopper. There is a metallic plate or disk on theinner end of the tube B, and also on the outside of the stopper, forkeeping the latter in position, although they maybe dispensed with. Theinner end ofthe tube B is the cone or valve-seat. D is the cone orvalve, which is tapered so as to engage with the cone or valve-seat, asseen at E, and with a stem, F, which extends down into the tube B, uponthe lower end of which there may be a screw-thread. G is a spiralwirecoil, of about the diameter of the interior of the tube B, attachedto the stem F, and extending below the lower end of the tube so as torest upon the journal, as seen in the drawing. The elasticity(laterally) of the spiral wire-coil will hold it to the stem Fsufficiently tight in any position, whether the stem is provided with ascrew-thread or not. The conc or valve is adjusted by slipping thewire-coil up or down on the stem, so as to allow a greater or lessquantity of oil to descend through the tube and reach the journal.

The jarring of the machinery will cause a slight but constant motion inthe wire-coil and cone or valve, which serves to feed down the oiluniformly onto the journal and prevent any clogging.

The tube B may be screwed into the box-cap, or it may be connected inany other manner, so as to be supported (with the reservoir) in anupright position.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The conical valve E, having prolongation F andWire-coil G, arranged, as described, in connection with a lubricator, toform a gradual conveyer of lubricating material to the journal of arotating shaft or axle.

The above specification of my invention signed by me this 27th day ofJuly, 1870.

BRICK EHLIN.

WVitnesses:

GEO. W. MABEE, T. B. MosHER.

